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| All Patents in class 62/511 | |||||
| Picture | Number | Date | Patentee | Title | |
| 2,224,377 | Dec. 10, 1940 | G.H. Clark | Refrigerating Apparatus | ||
| 2,326,093 | Aug. 03, 1943 | F.Y. Carter | Refrigerating System | ||
| 2,331,264 | Oct. 05, 1943 | F.Y. Carter | Refrigerating System | ||